Update ProblemStatusTests

Author: malczuuu

src/test/java/io/github/malczuuu/problem4j/core/ProblemStatusTests.java

@@ -1,9 +1,11 @@
 package io.github.malczuuu.problem4j.core;
 
-import static org.junit.jupiter.api.Assertions.assertNull;
-import static org.junit.jupiter.api.Assertions.assertTrue;
+import static java.util.stream.Collectors.toList;
+import static org.assertj.core.api.Assertions.assertThat;
 
+import java.util.List;
 import java.util.Optional;
+import java.util.stream.Stream;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.ValueSource;
 
@@ -16,10 +18,34 @@ void givenAmbiguousStatusCode_shouldPrioritizeNonDeprecatedOne(int value)
 
     Optional<ProblemStatus> optionalStatus = ProblemStatus.findValue(value);
 
-    assertTrue(optionalStatus.isPresent());
+    assertThat(optionalStatus.isPresent()).isTrue();
     ProblemStatus status = optionalStatus.get();
     Deprecated deprecationNotice =
         status.getClass().getField(status.name()).getAnnotation(Deprecated.class);
-    assertNull(deprecationNotice);
+    assertThat(deprecationNotice).isNull();
+
+    List<ProblemStatus> candidates =
+        Stream.of(ProblemStatus.values()).filter(v -> v.getStatus() == value).collect(toList());
+    assertThat(candidates.size())
+        .withFailMessage("there was exactly 1 candidate for " + value)
+        .isGreaterThan(1);
+  }
+
+  @ParameterizedTest
+  @ValueSource(ints = {305})
+  void givenSingleDeprecatedStatusCode_shouldKeepIt(int value) throws NoSuchFieldException {
+    Optional<ProblemStatus> optionalStatus = ProblemStatus.findValue(value);
+
+    assertThat(optionalStatus.isPresent()).isTrue();
+    ProblemStatus status = optionalStatus.get();
+    Deprecated deprecationNotice =
+        status.getClass().getField(status.name()).getAnnotation(Deprecated.class);
+    assertThat(deprecationNotice).isNotNull();
+
+    List<ProblemStatus> candidates =
+        Stream.of(ProblemStatus.values()).filter(v -> v.getStatus() == value).collect(toList());
+    assertThat(candidates.size())
+        .withFailMessage("there were more than 1 candidates for " + value)
+        .isEqualTo(1);
   }
 }